Joe is off on a school trip to an adventure park, and he can�t wait to put Uncle Charlie�s survival tips into practice! But it�s not long before he�s visited by Dexter, a scruffy-looking dog, with a howling tale of woe. Dexter doesn�t want his owner feeling guilty for his death, but it�ll be hard for Joe to help this time � it turns out that the owner is Joe�s headmaster,